<h1>Designing GraphQL APIs</h1>
<p>GraphQL provides a powerful way to build flexible APIs. Let&#39;s explore how to design and implement GraphQL APIs effectively.</p>
<h2>Schema Design</h2>
<pre><code class="language-graphql">type User {
  id: ID!
  name: String!
  email: String!
  posts: [Post!]!
}

type Post {
  id: ID!
  title: String!
  content: String!
  author: User!
  comments: [Comment!]!
}

type Query {
  user(id: ID!): User
  posts: [Post!]!
}

type Mutation {
  createPost(input: CreatePostInput!): Post!
  updatePost(id: ID!, input: UpdatePostInput!): Post!
}
</code></pre>
<h2>Best Practices</h2>
<ol>
<li>Use proper types</li>
<li>Implement pagination</li>
<li>Handle errors gracefully</li>
<li>Use fragments for reusability</li>
</ol>
<h2>Implementation Tips</h2>
<ul>
<li>Use DataLoader for batching</li>
<li>Implement proper caching</li>
<li>Handle authentication</li>
<li>Monitor performance</li>
</ul>
